16
5.Remove nails from the shingles, above and to the sides of the chimney. Place the fl ashing over the air terminal connector leaving a min. 3/4” of the air terminal connector showing above the top of the fl ashing. Slide the fl ashing underneath the sides and upper edge of the shingles. Ensure that the air terminal con-
nector is properly centred within the fl ashing, | FIGURE 25 |
giving a 3/4” margin all around. Fasten to the |
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roof. Do not nail through the lower portion of |
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the fl ashing. Make |
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caulking. Where possible, cover the sides and |
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top edges of the fl ashing with roofi ng material. |
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6.Aligning the seams of the terminal and air terminal connector, place the terminal over the air terminal connector making sure the liner goes into the hole in the terminal. Secure with the three screws provided.
7.Apply a heavy bead of weatherproof
caulking 2" above the fl ashing. Note: Maintain a minimum 2” space between the air inlet base and the storm collar. Install the storm collar around the air terminal and slide down to the caulk- ing. Tighten to ensure that a
8.If more liner needs to be used to reach the fi replace, couple them together as illustrated in Figure 22. The vent system must be supported approximately every 3 feet for both vertical and horizon- tal runs. Use noncombustible strapping to maintain a clearance to combustibles of 1".
FIREPLACE VENT CONNECTION
1.Install the 5" diameter fl exible vent pipe liner to the fi re- place. Secure with 3 screws and fl at washers. Seal the joint and screw holes using the high temperature sealant W573- 0007 (not supplied) Mill Pac.
2.Install the 8" diameter fl exible vent pipe to the fi replace. Attach and seal the joints with high temperature sealant
FIGURE 26
USING RIGID VENT COMPONENTS
The vent system must be supported approximately every 3 feet for both vertical and horizontal runs. Use Wolf Steel vent spacers every 3 feet and either side of each elbow to maintain the minimum 1¼" clearance between the outer and inner vent pipes. Use Wolf Steel support ring assembly or equivalent noncombustible strapping to maintain the minimum clearance to combustibles for both vertical and horizontal runs.
All inner exhaust and outer intake vent pipe joists may be sealed using either Red RTV high temp silicone sealant or Black high temp Mill Pac with the exception of the fireplace exhaust flue collar which must be sealed using Mill Pac (not supplied).
HORIZONTAL AIR TERMINAL INSTALLATION
1.Move the fi replace into position. Measure the vent length required between terminal and fi replace taking into account the
additional length needed for the finished wall surface and any 1¼" overlaps between venting components.
FIGURE 27
2.Apply high temperature sealant
3.The vent heat shield must be installed only when terminating horizontally. Remove the two screws nearest the vent collars on the top of the fi replace. Align the vent shield (supplied) and secure. Adjust the heat shield to touch the fi restop spacer.
4.Holding the air terminal (with the FIGURE 28 air deflectors to the top), insert into
both vent pipes with a twisting motion to ensure that both the terminal sleeves engage into the vent pipes and sealant. Secure the terminal to the exterior wall and make weather tight by sealing with caulking (not supplied).
The air terminal mounting plate may be
recessed into the exterior wall or siding by 1½", the depth of the return flange.
EXTENDED HORIZONTAL AIR TERMINAL
INSTALLATION
1. Follow the instructions for "Horizontal Air Terminal Instal- lations", items 1 to 3.
2.Continue adding com- ponents alternating inner and outer venting. Ensure that all 5" venting and elbows have sufficient vent spacers attached
and each component is securely fastened to the one prior. Attach the 5" telescopic sleeve to the vent run.
Repeat using a 8" telescopic sleeve. Secure and seal as before. To facilitate completion, attach 5" and 8" couplers to the air terminal.
3.Install the air terminal. See item 3 of the
Horizontal Air Terminal Installation. Extend the 5" telescopic sleeve; connect to the air terminal assembly. Fasten with self tapping screws and seal. Repeat using the 8" telescopic sleeve.
